modiloader | cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56

Analysis

max time kernel
120s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2024 14:12

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General

Target

cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
Size

90KB
MD5

4a70da67f4ce5dca05daf0a32fe99570
SHA1

40feb0874ab5cafb6e9bc6e53b46b39460589343
SHA256

cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56
SHA512

2770304ea6da9e3cdf2d7d0e4ccae11d6dce9544b902ed21fc9d6a30afa28499a08a7f070a857b51e367f129afbad6de600d780a7b6a8dcf7cd5b921cc4f007b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDZ:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3n

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/2684-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2684-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2684-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2684-63-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe

Executes dropped EXE 3 IoCs

pid	Process
3864	csrsll.exe
3676	csrsll.exe
2684	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 3864 set thread context of 3676	3864	csrsll.exe	101
PID 3864 set thread context of 2684	3864	csrsll.exe	102

UPX packed file 19 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1520-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1520-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2412-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2412-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2412-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1520-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b98-30.dat	upx
behavioral2/memory/2412-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3864-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3864-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2684-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2684-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2684-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2684-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2684-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3864-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2412-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3676-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2684-63-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe
Token: SeDebugPrivilege	3676	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
3864	csrsll.exe
3676	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 1520 wrote to memory of 2412	1520	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	89
PID 2412 wrote to memory of 3040	2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	90
PID 2412 wrote to memory of 3040	2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	90
PID 2412 wrote to memory of 3040	2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	90
PID 3040 wrote to memory of 4568	3040	cmd.exe	94
PID 3040 wrote to memory of 4568	3040	cmd.exe	94
PID 3040 wrote to memory of 4568	3040	cmd.exe	94
PID 2412 wrote to memory of 3864	2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	95
PID 2412 wrote to memory of 3864	2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	95
PID 2412 wrote to memory of 3864	2412	cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe	95
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 3676	3864	csrsll.exe	101
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102
PID 3864 wrote to memory of 2684	3864	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
"C:\Users\Admin\AppData\Local\Temp\cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Users\Admin\AppData\Local\Temp\cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe
  "C:\Users\Admin\AppData\Local\Temp\cfeb2161f4ea09ed04724be72feb5accfc782ad59ac0184024aa81db7cfb5a56N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VJKFD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3040
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:4568
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3864
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3676
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\VJKFD.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
b00db153bef4d860de168099e1202f2c

SHA1
f0f55e608ee818abf67156b6500619eb2335ffaf

SHA256
cdfae14d1394d11b1aaea96db35daa1b05125e1f2be5305016d592d5d3d3e9d6

SHA512
144263cedda5dce97f6e06595d0aaa2e0996a8b8824c138982dc294a5970d7b22f14c65ad2fadbf04c106338f362cea37eccf510e94b12ac959b8c3ec42540c6

Download Submit
memory/1520-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/1520-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1520-4-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/1520-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1520-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1520-3-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/2412-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2412-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2412-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2412-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2412-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2412-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2684-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2684-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3676-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3864-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3864-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3864-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads